碳钢板坯连铸凝固模拟  

Simulation of Solidification Process of Carbon Steel Concasting Slab

作　　者：张有慧[1] 王宥宏[1] 虞明香[1] 崔小朝[1] 魏计林[1] 

机构地区：[1]太原重型机械学院,太原030024

出　　处：《特殊钢》2004年第6期13-15,共3页Special Steel

摘　　要：采用开发的凝固模拟系统对 0 .0 7%～ 0 .70 %碳钢 15 0 0mm× 15 0mm连铸板坯凝固过程进行了模拟。研究了化学成分、结晶器水量、二冷区水流密度、拉坯速度和浇注温度对液相穴深度 (L)、液 固两相区高度 (h)、结晶器出口处和二冷区出口处的坯壳厚度 (S1和S2 )的影响。结果表明 ,随钢中C %由 0 .0 7%增至0 .70 %时 ,L值由 4 0 0cm增至 5 4 0cm ,在 0 .17%C时h有最小值 (10 0cm) ,S1和S2有最大值 (18mm和 5 2mm)。为保证结晶器出口处的已凝固的坯壳厚度 (S1) 。The 1 500 mm×150 mm slab concasting solidification process of 0.07～0.70 C steel has been simulated by developed solidification simulation system. The effect of chemical compositions, mould water-flow rate, secondary cooling water-flow rate, casting speed and pouring temperature on liquid phase bath depth (L), liquid-solid two phase depth (h), slab shell thickness at outlet of mould (S1) and at secondary cooling outlet (S2) has been studied. The results showed that with C content in steel increasing from 0.07% to 0.70%, the L value increases from 400 cm to 540 cm, and for 0.17% C steel,h had minimum value (100 cm), S1 and S2 had maximum value (18 mm and 52 mm). To ensure solidified shell thickness at outlet of mould (S1), it was available obviously to increase mould cooling water rate and decrease pouring temperature.

关 键 词：结晶器 二冷区 坯壳厚度 板坯连铸 连铸板坯 拉坯速度 水流密度 凝固模拟 碳钢 浇注温度 

分 类 号：TF777[冶金工程—钢铁冶金] TF341.6